CN110574753A - Windage yaw prevention insulator bird prevention device capable of increasing coverage area - Google Patents
Windage yaw prevention insulator bird prevention device capable of increasing coverage area Download PDFInfo
- Publication number
- CN110574753A CN110574753A CN201910934182.2A CN201910934182A CN110574753A CN 110574753 A CN110574753 A CN 110574753A CN 201910934182 A CN201910934182 A CN 201910934182A CN 110574753 A CN110574753 A CN 110574753A
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- bird
- proof
- prevention
- fixedly connected
- cover
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- 230000002265 prevention Effects 0.000 title claims abstract description 67
- 239000012212 insulator Substances 0.000 title claims abstract description 40
- 230000007246 mechanism Effects 0.000 claims abstract description 58
- 230000003014 reinforcing effect Effects 0.000 claims description 27
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 3
- 238000012857 repacking Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 210000003608 fece Anatomy 0.000 description 3
- 230000002147 killing effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 230000001846 repelling effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M29/00—Scaring or repelling devices, e.g. bird-scaring apparatus
- A01M29/06—Scaring or repelling devices, e.g. bird-scaring apparatus using visual means, e.g. scarecrows, moving elements, specific shapes, patterns or the like
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Birds (AREA)
- Engineering & Computer Science (AREA)
- Insects & Arthropods (AREA)
- Pest Control & Pesticides (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Catching Or Destruction (AREA)
Abstract
the invention discloses a windage yaw prevention insulator bird prevention device for increasing the coverage area, which comprises a bird prevention cover mechanism and a bird thorn prevention mechanism, wherein the bird prevention cover mechanism comprises: the bird prevention cover mechanism comprises a bird prevention cover body, a bird prevention needle mechanism and a cover body connecting mechanism; the bird-proof cover body is coaxially and fixedly connected to the position right above the insulator through the cover body connecting mechanism; the bird-proof needle mechanism is fixedly connected above the bird-proof cover body; the bird-proof thorn mechanism comprises a bird-proof thorn and a bird-proof thorn fixing piece; the bird-preventing prick is a divergent needling cluster; the tail end of the bird-proof thorn is coaxially and fixedly connected to the bird-proof thorn fixing piece; the bird-proof thorn fixing piece is a rod piece and is fixedly connected to the wind deflection prevention insulator overhanging cross arm through two nuts. Has the advantages that: the cost is low, the use is safe and reliable, and the bird-proof effect is obvious; can select different birds facilities of putting to arrange the use according to actual conditions in various places, installation convenient to use is swift to can carry out electrified repacking, the commonality is high, has effectively guaranteed the safe operation of circuit.
Description
the technical field is as follows:
The invention relates to the field of electric power, in particular to a windage yaw prevention insulator bird prevention device capable of increasing the coverage area.
Background art:
Bird droppings are a direct cause of tripping of a high-voltage line, and due to the fact that bird droppings are accumulated on the insulator for a long time, sediments on the surface of the insulator are increased to form a dirt layer, and in addition, the influence of external environment such as rain, snow, frost and fog is caused, under the condition of dirt and humidity, the conductivity of the surface of the high-voltage line is gradually increased, so that the current leakage amount of the insulator is increased, partial discharge is generated, and even flashover along the surface is caused, and the tripping caused by line grounding fault is caused. The transmission line directly relates to the safety and the continuity of electric power transmission, and if tripping occurs and the line is interrupted, social production and life are seriously affected, so that serious economic loss and even safety problems are brought.
The measures for preventing the bird damage of the power transmission line are basically divided into three categories:
the first type is to carry out bird killing activities along the line, birds are not allowed to breed around the line, the bird killing method contradicts the policy of protecting birds, certainly, the bird killing method is not feasible, the current widely applied bird prevention measures are the latter two types, and good effects are obtained in a certain period and a certain range;
the second type is that a bird repelling device is arranged on a line pole tower, birds are not allowed to approach the pole tower, the bird repelling device comprises bird-proof baffles, bird-proof thorns, bird-proof nets, bird-proof barrels and the like which are arranged on tower materials such as a pole tower cross arm and the like, and the birds are prevented from staying at a sufficient place on the pole tower;
The third type is to install protective measures above the line insulator, such as protective covers and the like, the bird-proof cover is a regeneration product of the bird-proof baffle, the defects that the bird-proof baffle is low in strength and difficult to fasten are overcome, the bird-proof cover protective device is mainly installed with a large-disc-diameter insulator or an umbrella skirt which is adhered, and the composite umbrella skirt is large in outer diameter and can play a role of an umbrella, so that pollution caused by bird droppings is prevented to a certain extent.
as for the above measures against bird damage, there are the following problems: for the tower heads of the corner towers of types 1A4-DJ, 1B3-J1 and the like, an overhanging wire cross arm is arranged, and the bird-proof stabs cannot be arranged above the wind-break-proof insulator and the bird-proof baffles cannot be arranged; the traditional bird-proof cover cannot be arranged above the windage yaw insulator, the models are not matched, and the bird-proof cover designed for the windage yaw insulator is not available in the market at present; bird-preventing blind areas still exist above the bird-preventing cover, a standing place is provided for birds above the traditional bird-preventing cover, and potential safety hazards are caused to the lines due to frequent movement of the birds around the bird-preventing cover.
therefore, in order to meet the requirement of bird prevention, the bird prevention coverage area needs to be increased, the bird prevention cover with a suitable matching model is designed, and the problem of insufficient bird repelling capability above the bird prevention cover is solved.
The invention content is as follows:
the invention aims to provide a bird-proof cage which has the advantages of low manufacturing cost, safe and reliable use and obvious bird-proof effect; can select the different bird facilities of putting to arrange the collocation and use according to actual conditions in various places, installation convenient to use is swift to can carry out electrified repacking, the commonality is high, has effectively guaranteed the windage yaw insulator anti-bird device of the safe operation of circuit.
The invention is realized by the following technical scheme:
The invention relates to a windage yaw prevention insulator bird prevention device capable of increasing the coverage area, which comprises a bird prevention cover mechanism and a bird thorn prevention mechanism, wherein the bird prevention cover mechanism comprises: the bird prevention cover mechanism comprises a bird prevention cover body, a bird prevention needle mechanism and a cover body connecting mechanism; the bird-proof cover body is a disc-shaped cover body; the bird-proof cover body is coaxially and fixedly connected to the position right above the insulator through the cover body connecting mechanism; the bird-proof needle mechanism is fixedly connected above the bird-proof cover body; the bird-proof thorn mechanism comprises a bird-proof thorn and a bird-proof thorn fixing piece; the bird-preventing prick is a divergent needling cluster; the tail end of the bird-proof thorn is coaxially and fixedly connected to the bird-proof thorn fixing piece; the bird-proof thorn fixing piece is a rod piece and is fixedly connected to the wind deflection prevention insulator overhanging cross arm through two nuts.
The utility model provides an foretell windage yaw insulator anti-bird device of increase area of coverage, wherein: the bird-preventing needle mechanisms are two in number and are arranged in mirror symmetry with each other; the bird-proof needle mechanism comprises a bird-proof needle plate and a bird-proof needle; the bird-proof needle plate is a scissor-fork type telescopic bottom plate; the bird-proof needle plate is fixedly connected to the upper surface of the bird-proof cover body; the anti-bird needle is fixedly connected at the connecting point of each shear fork at the two sides of the shear fork structure of the anti-bird needle plate; the bird prevention pins extend vertically upward from the upper surface of the bird prevention pin plate.
the utility model provides an foretell windage yaw insulator anti-bird device of increase area of coverage, wherein: the bird-proof cover body comprises a disc cover, a reinforcing rib and a connecting hole; the disc cover is composed of two separated semicircular discs; the two semicircular disks of the disk cover are detachably connected through bolts; reinforcing ribs are arranged on the upper surface and the lower surface of the disc cover; eight connecting holes are formed in the disc cover; the connecting hole is a through hole; the connecting holes are grouped into four groups in pairs, and are distributed on the disc cover in a circumferential array by taking the central axis of the disc cover as an axis; the two ends of the bird-proof needle plate are fixedly connected with the connecting holes through connecting shafts.
The utility model provides an foretell windage yaw insulator anti-bird device of increase area of coverage, wherein: the cover body connecting mechanism comprises a sleeve, a fixed back plate and a puller bolt; the sleeve consists of two completely equal semicircular ring bodies; the sleeve is fixedly connected to the circle center of the disc cover; the sleeve is vertical to the disc cover and penetrates through the disc cover to be fixedly connected with the disc cover; the fixed back plate consists of two completely equal sheet-shaped plates; the fixed back plate is respectively and fixedly connected with a semicircular ring body of the sleeve and a semicircular disc of the disc cover; two half-ring bodies of the sleeve are respectively and fixedly connected with a jacking bolt; the central axis of the puller bolt points to the central axis of the sleeve horizontally.
The utility model provides an foretell windage yaw insulator anti-bird device of increase area of coverage, wherein: the reinforcing ribs comprise cross reinforcing ribs, herringbone reinforcing ribs and annular reinforcing ribs; the cross-shaped reinforcing rib is arranged on the upper surface of the disc cover; the 'X' -shaped reinforcing ribs and the circular reinforcing ribs are arranged on the lower surface of the disc cover.
The utility model provides an foretell windage yaw insulator anti-bird device of increase area of coverage, wherein: the bird-proof thorn fixing piece comprises a rod piece and two fastening nuts; the peripheral surface of the rod piece is provided with threads; two fastening nuts are assembled and connected with the rod piece.
The invention has the beneficial effects that: the cost is low, the use is safe and reliable, and the bird-proof effect is obvious; can select different birds facilities of putting to arrange the use according to actual conditions in various places, installation convenient to use is swift to can carry out electrified repacking, the commonality is high, has effectively guaranteed the safe operation of circuit.
Description of the drawings:
FIG. 1: the invention discloses a three-dimensional structure schematic diagram of an anti-bird cover mechanism;
FIG. 2: another schematic perspective view of the bird shield mechanism of the present invention;
FIG. 3: the invention discloses a three-dimensional structure schematic diagram of an anti-bird thorn mechanism;
FIG. 4: the invention discloses a bird-proof shield body and a shield body connecting mechanism;
FIG. 5: another three-dimensional structure schematic diagram of the bird-proof cover body and the cover body connecting mechanism is provided;
FIG. 6: the invention discloses a three-dimensional structure schematic diagram of an anti-bird needle mechanism;
In the figure: 1-bird prevention cover mechanism, 2-bird prevention prick mechanism, 11-bird prevention cover body, 12-bird prevention needle mechanism, 13-cover body connecting mechanism, 21-bird prevention prick, 22-bird prevention prick fixing member, 111-disc cover, 112-reinforcing rib, 113-connecting hole, 121-bird prevention needle plate, 122-bird prevention needle, 131-sleeve, 132-fixing back plate and 133-puller bolt.
the specific implementation mode is as follows:
the invention is further described with reference to the following figures and detailed description:
Example (b): as shown in fig. 1 to 6, a windage yaw insulator bird prevention device for increasing a coverage area comprises a bird prevention cover mechanism 1 and a bird prevention stabbing mechanism 2, wherein: the bird prevention cover mechanism 1 comprises a bird prevention cover body 11, a bird prevention needle mechanism 12 and a cover body connecting mechanism 13; the bird-proof cover body 11 is a disc-shaped cover body; the bird-proof cover body 11 is coaxially and fixedly connected to the position right above the insulator through the cover body connecting mechanism 13; the bird-proof needle mechanism 12 is fixedly connected above the bird-proof cover body 11; the bird-proof thorn mechanism 2 comprises a bird-proof thorn 21 and a bird-proof thorn fixing piece 22; the bird-proof stabs 21 are divergent needling bunches; the tail end of the bird-proof thorn 21 is coaxially and fixedly connected to the bird-proof thorn fixing piece 22; the bird-stab preventing fixing piece 22 is a rod piece and is fixedly connected to the anti-wind-drift insulator overhanging cross arm through two nuts; wherein: the bird-preventing needle mechanisms 12 are two in number and are arranged in mirror symmetry with each other; the bird prevention pin mechanism 12 includes a bird prevention pin plate 121 and a bird prevention pin 122; the bird-proof needle plate 121 is a scissor-fork type telescopic bottom plate; the bird-proof needle plate 121 is fixedly connected to the upper surface of the bird-proof cover body 11; the anti-bird needle 122 is fixedly connected to each shear fork connecting point on the two sides of the shear fork structure of the anti-bird needle plate 121; the bird prevention pins 122 extend vertically upward from the upper surface of the bird prevention pin plate 121; wherein: the bird prevention cover body 11 comprises a disc cover 111, a reinforcing rib 112 and a connecting hole 113; the disc cover 111 is composed of two separated half discs; the two semicircular disks of the disk cover 111 are detachably connected through bolts; reinforcing ribs 112 are arranged on the upper surface and the lower surface of the disc cover 111; eight connecting holes 113 are formed in the disc cover 111; the connection hole 113 is a through hole; the connecting holes 113 are grouped into four groups in pairs, and are arranged on the disc cover 111 in a circumferential array by taking the central axis of the disc cover 111 as an axis; the two ends of the bird-proof needle plate 121 are fixedly connected with the connecting holes 113 through connecting shafts; wherein: the cover body connecting mechanism 13 comprises a sleeve 131, a fixed back plate 132 and a tightening bolt 133; the sleeve 131 is composed of two completely equal semicircular rings; the sleeve 131 is fixedly connected to the circle center of the disc cover 111; the sleeve 131 is perpendicular to the disc cover 111 and penetrates through the disc cover 111 to be fixedly connected with the disc cover; the fixed back plate 132 is composed of two completely equal sheet-shaped plates; the fixed back plate 132 is respectively fixedly connected with a semi-circular ring body of the sleeve 131 and a semi-circular disc of the disc cover 111; two half-circular ring bodies of the sleeve 131 are respectively and fixedly connected with a jacking bolt 133; the central axis of the puller bolt 133 points horizontally to the central axis of the sleeve 131; wherein: the reinforcing ribs 112 include cross reinforcing ribs, "+" shaped reinforcing ribs and circular reinforcing ribs; the cross-shaped reinforcing ribs are arranged on the upper surface of the disc cover 111; the "+" shaped reinforcing ribs and the circular reinforcing ribs are arranged on the lower surface of the disc cover 111; wherein: the bird spike prevention fixing member 22 includes a rod member and two fastening nuts; the peripheral surface of the rod piece is provided with threads; two fastening nuts are assembled and connected with the rod piece.
When in work: the bird-proof cover mechanism 1 is fixedly connected to the upper end of the windage yaw prevention insulator to ensure the coaxial fixed connection; fixedly connecting the bird-stab preventing mechanism 2 to an overhanging cross arm of the windage yaw preventing insulator; wherein, the diameter phi of the anti-bird cover body 11 is more than or equal to 60cm, the mounting hardware is made of light corrosion-resistant materials, and the cover body connecting mechanism 13 and the anti-bird thorn fixing piece 22 are made of stainless steel materials; the caliber design of the middle bayonet of the cover body connecting mechanism 13 meets the design requirement of the windage yaw prevention insulator, and the insulating property meets the regulation requirement.
Through calculation experiments, the total weight of the bird prevention cover device does not exceed 8kg, the diameter of the bird prevention cover device is 64cm, and the bird prevention coverage area of the bird prevention thorns is added, so that the bird prevention diameter can reach 82cm, and the bird prevention treatment area required by the wind deflection prevention insulator is met. All the stress indexes meet the requirements, and the damage cannot easily occur.
Under the combined action of the bird preventing cover body 11, the bird preventing stabs 21 and the bird preventing pin mechanism 12, the bird preventing treatment covering radius of the windage yaw preventing insulator is ensured to reach more than 0.4 m, and the requirement of bird preventing area covering under the condition that the windage yaw preventing insulator has an outward extending cross arm is met; greatly reducing the bird damage times and ensuring the bird damage prevention effect.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (6)
1. The utility model provides an increase area covered prevent wind partial insulator anti-bird device, includes anti-bird cover mechanism (1) and prevents bird thorn mechanism (2), its characterized in that: the bird prevention cover mechanism (1) comprises a bird prevention cover body (11), a bird prevention needle mechanism (12) and a cover body connecting mechanism (13); the bird prevention cover body (11) is a disc-shaped cover body; the bird-proof cover body (11) is coaxially and fixedly connected to the position right above the insulator through a cover body connecting mechanism (13); a bird-proof needle mechanism (12) is fixedly connected above the bird-proof cover body (11); the bird-proof thorn mechanism (2) comprises a bird-proof thorn (21) and a bird-proof thorn fixing piece (22); the bird-preventing pricks (21) are scattered needle prick bunches; the tail end of the cluster of the bird-proof thorn (21) is coaxially and fixedly connected to the bird-proof thorn fixing piece (22); the bird-thorn-preventing fixing piece (22) is a rod piece and is fixedly connected to the wind deflection-preventing insulator overhanging cross arm through two nuts.
2. The windage yaw insulator bird guard of claim 1, wherein: the bird-preventing needle mechanisms (12) are two in number and are arranged in mirror symmetry with each other; the bird-proof needle mechanism (12) comprises a bird-proof needle plate (121) and a bird-proof needle (122); the bird-proof needle plate (121) is a scissor-fork type telescopic bottom plate; the bird-proof needle plate (121) is fixedly connected to the upper surface of the bird-proof cover body (11); each shear fork connecting point at two sides of the shear fork structure of the bird-proof needle plate (121) is fixedly connected with a bird-proof needle (122); the bird preventing needle (122) extends vertically upwards from the upper surface of the bird preventing needle plate (121).
3. the windage yaw insulator bird guard of claim 2, wherein: the bird prevention cover body (11) comprises a disc cover (111), a reinforcing rib (112) and a connecting hole (113); the disc cover (111) is composed of two separated semicircular discs; the two semicircular discs of the disc cover (111) are detachably connected through bolts; reinforcing ribs (112) are arranged on the upper surface and the lower surface of the disc cover (111); eight connecting holes (113) are formed in the disc cover (111); the connecting hole (113) is a through hole; the connecting holes (113) are divided into four groups in pairs, and are distributed on the disc cover (111) in a circumferential array by taking the central axis of the disc cover (111) as an axis; and two ends of the bird-proof needle plate (121) are fixedly connected with the connecting holes (113) through connecting shafts.
4. the windage yaw insulator bird guard of claim 3, wherein: the cover body connecting mechanism (13) comprises a sleeve (131), a fixed back plate (132) and a puller bolt (133); the sleeve (131) consists of two completely equal semicircular ring bodies; the sleeve (131) is fixedly connected to the circle center of the disc cover (111); the sleeve (131) is perpendicular to the disc cover (111) and penetrates through the disc cover (111) to be fixedly connected with the disc cover; the fixed back plate (132) is composed of two completely equal sheet-shaped plates; the fixed back plate (132) is respectively fixedly connected with a semi-circular ring body of the sleeve (131) and a semi-circular disc of the disc cover (111); two semi-circular ring bodies of the sleeve (131) are respectively and fixedly connected with a puller bolt (133); the central axis of the puller bolt (133) horizontally points to the central axis of the sleeve (131).
5. The windage yaw insulator bird guard of claim 3, wherein: the reinforcing ribs (112) comprise cross reinforcing ribs, 'star' -shaped reinforcing ribs and circular reinforcing ribs; the cross-shaped reinforcing ribs are arranged on the upper surface of the disc cover (111); the 'X' -shaped reinforcing ribs and the circular reinforcing ribs are arranged on the lower surface of the disc cover (111).
6. The windage yaw insulator bird guard of claim 1, wherein: the bird-proof thorn fixing piece (22) comprises a rod piece and two fastening nuts; the peripheral surface of the rod piece is provided with threads; the two fastening nuts are connected with the rod piece in a matched mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910934182.2A CN110574753A (en) | 2019-09-29 | 2019-09-29 | Windage yaw prevention insulator bird prevention device capable of increasing coverage area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910934182.2A CN110574753A (en) | 2019-09-29 | 2019-09-29 | Windage yaw prevention insulator bird prevention device capable of increasing coverage area |
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| Publication Number | Publication Date |
|---|---|
| CN110574753A true CN110574753A (en) | 2019-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910934182.2A Pending CN110574753A (en) | 2019-09-29 | 2019-09-29 | Windage yaw prevention insulator bird prevention device capable of increasing coverage area |
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| CN (1) | CN110574753A (en) |
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| CN201252377Y (en) * | 2008-09-09 | 2009-06-03 | 华北电网有限公司唐山供电公司 | Electric transmission line pole bird-preventing barbed wire row |
| CN201639236U (en) * | 2010-08-10 | 2010-11-17 | 河南省电力公司漯河供电公司 | Bird-driving stabs of transmission and distribution line |
| CN102578072A (en) * | 2012-03-09 | 2012-07-18 | 江苏新澳电力技术有限公司 | Bird feces-proofing splinter used for crossarm insulator |
| CN203243863U (en) * | 2013-05-13 | 2013-10-23 | 宁波天弘电力器具有限公司 | Bird thorn type bird prevention cover |
| CN105360106A (en) * | 2015-12-04 | 2016-03-02 | 河南四达电力设备股份有限公司 | Stretchable anti-bird needle plate |
| CN206976975U (en) * | 2017-07-21 | 2018-02-06 | 河南四达电力设备股份有限公司 | A kind of combined type bird-proof needle plate |
| CN211268319U (en) * | 2019-09-29 | 2020-08-18 | 国网宁夏电力有限公司吴忠供电公司 | Windage yaw prevention insulator bird prevention device capable of increasing coverage area |
-
2019
- 2019-09-29 CN CN201910934182.2A patent/CN110574753A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201252377Y (en) * | 2008-09-09 | 2009-06-03 | 华北电网有限公司唐山供电公司 | Electric transmission line pole bird-preventing barbed wire row |
| CN201639236U (en) * | 2010-08-10 | 2010-11-17 | 河南省电力公司漯河供电公司 | Bird-driving stabs of transmission and distribution line |
| CN102578072A (en) * | 2012-03-09 | 2012-07-18 | 江苏新澳电力技术有限公司 | Bird feces-proofing splinter used for crossarm insulator |
| CN203243863U (en) * | 2013-05-13 | 2013-10-23 | 宁波天弘电力器具有限公司 | Bird thorn type bird prevention cover |
| CN105360106A (en) * | 2015-12-04 | 2016-03-02 | 河南四达电力设备股份有限公司 | Stretchable anti-bird needle plate |
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| CN211268319U (en) * | 2019-09-29 | 2020-08-18 | 国网宁夏电力有限公司吴忠供电公司 | Windage yaw prevention insulator bird prevention device capable of increasing coverage area |
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